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<table width="100%" summary="page for BlueJays"><tr><td>BlueJays</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>Blue Jay Measurements</h2>

<h3>Description</h3>

<p>Body measurements for a sample of blue jays
</p>


<h3>Format</h3>

<p>A data frame with 123 observations on the following 9 variables.
</p>

<table summary="Rd table">
<tr>
 <td style="text-align: right;">
    <code>BirdID</code> </td><td style="text-align: left;"> ID tag for bird</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>KnownSex</code> </td><td style="text-align: left;"> Sex coded as <code>F</code> or <code>M</code></td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>BillDepth</code> </td><td style="text-align: left;"> Thickness of the bill measured at the nostril (in mm)</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>BillWidth</code> </td><td style="text-align: left;"> Width of the bill (in mm)</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>BillLength</code> </td><td style="text-align: left;"> Length of the bill (in mm)</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>Head</code> </td><td style="text-align: left;"> Distance from tip of bill to back of head (in mm)</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>Mass</code> </td><td style="text-align: left;"> Body mass (in grams)</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>Skull</code> </td><td style="text-align: left;"> Distance from base of bill to back of skull (in mm)</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>Sex</code> </td><td style="text-align: left;"> Sex coded as 0=female or 1=male</td>
</tr>
<tr>
 <td style="text-align: right;">
  </td>
</tr>

</table>



<h3>Details</h3>

<p>Body measurements for captured blue jays.  Values are averaged for birds captured more than once.
</p>


<h3>Source</h3>

<p>Data from Keith Tarvin, Department of Biology, Oberlin College
</p>


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